Perhaps you should try some spelling variations:
"hang va vai snippets" » "hang va bai snippets", "hang va van snippets", "hang va dai snippets", "nang va vai snippets", "dang va vai snippets", "hanh va vai snippets", "hang va vai slippers"
"using low java snippets" » "using low java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"hang va vai snippets\") OR (\"using low java snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( hang va vai snippets ) OR ( using low java snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("hang va vai snippets") OR ("using low java snippets"))) OR ("locating bug code snippets"))*.